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Three-dimensional temperature field measurement of flame using a single light field camera

Sun, Jun, Xu, Chuanlong, Zhang, Biao, Hossain, Md. Moinul, Wang, Shimin, Qi, Hong, Tan, Heping (2016) Three-dimensional temperature field measurement of flame using a single light field camera. Optics Express, 24 (2). pp. 1118-1132. ISSN 1094-4087. (doi:10.1364/OE.24.001118) (KAR id:67212)

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https://dx.doi.org/10.1364/OE.24.001118

Abstract

Compared with conventional camera, the light field camera takes the advantage of being capable of recording the direction and intensity information of each ray projected onto the CCD (charge couple device) sensor simultaneously. In this paper, a novel method is proposed for reconstructing three-dimensional (3-D) temperature field of a flame based on a single light field camera. A radiative imaging of a single light field camera is also modeled for the flame. In this model, the principal ray represents the beam projected onto the pixel of the CCD sensor. The radiation direction of the ray from the flame outside the camera is obtained according to thin lens equation based on geometrical optics. The intensities of the principal rays recorded by the pixels on the CCD sensor are mathematically modeled based on radiative transfer equation. The temperature distribution of the flame is then reconstructed by solving the mathematical model through the use of least square QR-factorization algorithm (LSQR). The numerical simulations and experiments are carried out to investigate the validity of the proposed method. The results presented in this study show that the proposed method is capable of reconstructing the 3-D temperature field of a flame.

Item Type: Article
DOI/Identification number: 10.1364/OE.24.001118
Uncontrolled keywords: Imaging systems; Instrumentation, measurement, and metrology
Subjects: Q Science > QC Physics > QC355 Optics
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: Moinul Hossain
Date Deposited: 06 Jun 2018 09:27 UTC
Last Modified: 31 Jan 2020 13:25 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/67212 (The current URI for this page, for reference purposes)
Hossain, Md. Moinul: https://orcid.org/0000-0003-4184-2397
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